The Interoperable Master Format (IMF) is an international standard* for the file-based interchange of multi-version, finished audio-visual works. It supports multi-language, multi-reel, subtitles / closed captions, video inserts and after-the-fact delivery of content with “supplemental packages.” IMF is built around a core framework (SMPTE ST 2067-2) that includes essence containers, audio and timed text essence…